Patents by Inventor Hendrik J. J. Sobczak

Hendrik J. J. Sobczak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus for preparing hot drinks
    Patent number: 4823685
    Abstract: An apparatus for making coffee or other hot drinks from finely divided material and hot water including a space for receiving the water and the material, a filter and a discharge conduit positioned below the filter. A source of gas under pressure is connected to the discharge conduit such that during a selected time the mixture of water and material inside the space can be agitated from below in counterflow to the natural flow of the extract.
    Type: Grant
    Filed: May 14, 1987
    Date of Patent: April 25, 1989
    Inventors: Peter M. Boumans, Hendrik J. J. Sobczak